subsoil drainage meaning in Chinese
底层土壤排水
地下排水
下层土排水
亚土层排水
Examples
- Piping systems for civil engineering subsoil drainage - part 1 : plastic pipes
土木工程地下排水用管道系统.第1部分:塑料管 - Plastics . plastics piping system for civil engineering subsoil drainage . specification
塑料.土木工程地下排水塑料管道系统.规范